attacker vs wrongdoer

attacker and wrongdoer both are nouns.

Word	Noun	Adjective	Verb	Adverb
attacker	Yes	No	No	No
wrongdoer	Yes	No	No	No

As nouns, wrongdoer is a hypernym of attacker; that is, wrongdoer is a word with a broader meaning than attacker:

Other hypernyms of attacker include offender.

attacker (noun)	wrongdoer (noun)
someone who attacks	a person who transgresses moral or civil law